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reader_test.py
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68 lines (54 loc) · 2.32 KB
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#!/usr/bin/env python3
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
from unittest import TestCase, main
import time
from pulsar import Client, MessageId
class ReaderTest(TestCase):
def setUp(self):
self._client: Client = Client('pulsar://localhost:6650')
def tearDown(self) -> None:
self._client.close()
def test_has_message_available_after_seek(self):
topic = f'test_has_message_available_after_seek-{time.time()}'
producer = self._client.create_producer(topic)
reader = self._client.create_reader(topic, start_message_id=MessageId.earliest)
producer.send('msg-0'.encode())
self.assertTrue(reader.has_message_available())
reader.seek(MessageId.latest)
self.assertFalse(reader.has_message_available())
producer.send('msg-1'.encode())
self.assertTrue(reader.has_message_available())
def test_seek_latest_message_id(self):
topic = f'test_seek_latest_message_id-{time.time()}'
producer = self._client.create_producer(topic)
msg_id = producer.send('msg'.encode())
reader = self._client.create_reader(topic,
start_message_id=MessageId.latest)
self.assertFalse(reader.has_message_available())
reader.close()
reader = self._client.create_reader(topic,
start_message_id=MessageId.latest,
start_message_id_inclusive=True)
self.assertTrue(reader.has_message_available())
msg = reader.read_next(3000)
self.assertEqual(msg.message_id(), msg_id)
reader.close()
if __name__ == "__main__":
main()